Examples
shǒu xiān首先，yīn wèi因为hǎi shuǐ海水biàn变rè热shí时péng zhàng膨胀，hǎi píng miàn海平面kě néng可能tí gāo提高。
首先，因为海水变热时膨胀，海平面可能提高。
First of all, the level of the ocean could rise, because ocean water expands as it grows warmer.
融化中的极地冰盖也可以使海平面上涨的势态更加严重。
Melting polar icecaps could also contribute to an increase in sea levels.
我在想是否北极的冰融化的时候,海平面就会上升。
I wonder if the sea levels will rise when the North Pole melts.